Installation
4-3
L MA9300PLC EN 1.4
4.1.3 Mounting with thermally separated power stage
(”push-through technique”)
The heat sink of the controllers 9321 ... 9329 can be mounted outside the control cabinet to reduce
the heat generated in the control cabinet. For this, you need a mounting frame with seal (can be
ordered from Lenze).
• Distribution of the power loss:
– approx. 65% via the separated heat sink (heat sink + blower)
– approx. 35% inside the controller
• The type of protection of the separated cooler (heat sink and blower) is IP41.
• The ratings of the controller are still applicable.
Preparation for assembly:
1. Lay the halves of the mounting frame into the slot provided on the controller.
2. Push the frame halves together until the ends lock.
3. Slip the seal over the heat sink and lay into the slot provided.
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